Overview
The L79L15ACUTR is a three-terminal negative voltage regulator produced by STMicroelectronics. This component is part of the L79L series, which is designed to offer robust and reliable voltage regulation. The L79L15ACUTR is essentially indestructible due to its internal current limiting and thermal shutdown features. It can deliver up to 100 mA of output current when an adequate heat-sink is provided. This regulator is intended for use in a wide range of applications, including local or on-card regulation, to eliminate noise and distribution problems associated with single-point regulation. It can also be used with power pass elements to create high-current voltage regulators, and it serves as an effective replacement for Zener diode/resistor combinations, offering improved output impedance, lower quiescent current, and reduced noise.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | -15 | V |
| Output Current | Up to 100 | mA |
| Operating Temperature Range | 0 to 125 | °C |
| Storage Temperature Range | -40 to 150 | °C |
| Package Type | SOT-89 | |
| RoHS Compliance | Ecopack2 | |
| Grade | Industrial | |
| Dropout Voltage | 1.7 | V |
| Quiescent Current | 6.5 mA (at 25°C), 6 mA (at 125°C) | mA |
| Output Noise Voltage | 90 µV (10 Hz to 100 kHz) | µV |
| Supply Voltage Rejection | 34 to 39 dB (at 120 Hz) | dB |
Key Features
- Output current up to 100 mA
- Output voltage of -15 V
- Thermal overload protection and short-circuit protection
- No external components required
- Output tolerance of + 4%
- Improved output impedance and lower quiescent current compared to Zener diode/resistor combinations
- Low noise operation
Applications
The L79L15ACUTR is suitable for a wide range of applications, including:
- Local or on-card voltage regulation to eliminate noise and distribution problems associated with single-point regulation.
- Use with power pass elements to create high-current voltage regulators.
- Replacement for Zener diode/resistor combinations, offering improved performance.
- General-purpose negative voltage regulation in various electronic systems.
Q & A
- What is the output voltage of the L79L15ACUTR?
The output voltage of the L79L15ACUTR is -15 V.
- What is the maximum output current of the L79L15ACUTR?
The maximum output current is up to 100 mA.
- What are the key protection features of the L79L15ACUTR?
The L79L15ACUTR features internal current limiting and thermal shutdown, providing thermal overload protection and short-circuit protection.
- Does the L79L15ACUTR require any external components?
No, the L79L15ACUTR does not require any external components.
- What is the operating temperature range of the L79L15ACUTR?
The operating temperature range is from 0 to 125°C.
- What is the package type of the L79L15ACUTR?
The package type is SOT-89.
- Is the L79L15ACUTR RoHS compliant?
- What is the quiescent current of the L79L15ACUTR?
The quiescent current is 6.5 mA at 25°C and 6 mA at 125°C.
- What is the output noise voltage of the L79L15ACUTR?
The output noise voltage is 90 µV over the frequency range of 10 Hz to 100 kHz.
- What are some common applications of the L79L15ACUTR?
